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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/chromeos/cros/screen_lock_library.h"
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/logging.h"
#include "base/message_loop.h"
#include "base/observer_list.h"
#include "chrome/browser/chromeos/cros/cros_library.h"
#include "content/public/browser/browser_thread.h"
#include "third_party/cros/chromeos_screen_lock.h"
namespace chromeos {
class ScreenLockLibraryImpl : public ScreenLockLibrary {
public:
ScreenLockLibraryImpl() : screen_lock_connection_(NULL) {}
virtual ~ScreenLockLibraryImpl() {
if (screen_lock_connection_) {
chromeos::DisconnectScreenLock(screen_lock_connection_);
screen_lock_connection_ = NULL;
}
}
// Begin ScreenLockLibrary implementation.
virtual void Init() OVERRIDE {
DCHECK(CrosLibrary::Get()->libcros_loaded());
screen_lock_connection_ =
chromeos::MonitorScreenLock(&ScreenLockedHandler, this);
}
virtual void AddObserver(Observer* observer) OVERRIDE {
observers_.AddObserver(observer);
}
virtual void RemoveObserver(Observer* observer) OVERRIDE {
observers_.RemoveObserver(observer);
}
virtual void NotifyScreenLockRequested() OVERRIDE {
chromeos::NotifyScreenLockRequested();
}
virtual void NotifyScreenLockCompleted() OVERRIDE {
chromeos::NotifyScreenLockCompleted();
}
virtual void NotifyScreenUnlockRequested() OVERRIDE {
chromeos::NotifyScreenUnlockRequested();
}
virtual void NotifyScreenUnlockCompleted() OVERRIDE {
chromeos::NotifyScreenUnlockCompleted();
}
// End ScreenLockLibrary implementation.
private:
static void ScreenLockedHandler(void* object, ScreenLockEvent event) {
ScreenLockLibraryImpl* self = static_cast<ScreenLockLibraryImpl*>(object);
switch (event) {
case chromeos::LockScreen:
self->LockScreen();
break;
case chromeos::UnlockScreen:
self->UnlockScreen();
break;
case chromeos::UnlockScreenFailed:
self->UnlockScreenFailed();
break;
default:
NOTREACHED();
break;
}
}
void LockScreen() {
// Called from ScreenLockedHandler, a libcros callback which should
// always run on UI thread.
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
FOR_EACH_OBSERVER(Observer, observers_, LockScreen(this));
}
void UnlockScreen() {
// Called from ScreenLockedHandler, a libcros callback which should
// always run on UI thread.
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
FOR_EACH_OBSERVER(Observer, observers_, UnlockScreen(this));
}
void UnlockScreenFailed() {
// Called from ScreenLockedHandler, a libcros callback which should
// always run on UI thread.
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
FOR_EACH_OBSERVER(Observer, observers_, UnlockScreenFailed(this));
}
chromeos::ScreenLockConnection screen_lock_connection_;
ObserverList<Observer> observers_;
DISALLOW_COPY_AND_ASSIGN(ScreenLockLibraryImpl);
};
class ScreenLockLibraryStubImpl : public ScreenLockLibrary {
public:
ScreenLockLibraryStubImpl() {}
virtual ~ScreenLockLibraryStubImpl() {}
virtual void Init() OVERRIDE {}
virtual void AddObserver(Observer* observer) OVERRIDE {}
virtual void RemoveObserver(Observer* observer) OVERRIDE {}
virtual void NotifyScreenLockRequested() OVERRIDE {}
virtual void NotifyScreenLockCompleted() OVERRIDE {}
virtual void NotifyScreenUnlockRequested() OVERRIDE {}
virtual void NotifyScreenUnlockCompleted() OVERRIDE {}
};
// static
ScreenLockLibrary* ScreenLockLibrary::GetImpl(bool stub) {
ScreenLockLibrary* impl;
if (stub)
impl = new ScreenLockLibraryStubImpl();
else
impl = new ScreenLockLibraryImpl();
impl->Init();
return impl;
}
} // namespace chromeos
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